Provide "desktop" file for linux binary version

[shuvashish76]

Request to provide .desktop files similar to how Syncthing binaries provide it by default: https://github.com/syncthing/syncthi.../linux-desktop and readme file for new users.


e.g. I've created this for my own purpose.

[Desktop Entry]
Comment[en_IN]=One stop Solution to all your e-book needs
Comment=One stop Solution to all your e-book needs
Exec=~/calibre-bin/calibre/calibre
GenericName[en_IN]=ebook management
GenericName=ebook management
Icon=~/calibre-bin/calibre/resources/images/library.png
MimeType=application/vnd.amazon.mobi8-ebook;application/pdf;application/epub+zip;
Name[en_IN]=Calibre
Name=Calibre
Path=
StartupNotify=true
Terminal=false
TerminalOptions=
Type=Application
Keywords=pdf;epub;ebook;book;kobo;kindle;
X-KDE-SubstituteUID=false
X-KDE-Username=
Categories=Office

[kovidgoyal]

Thebinary installer already installs desktop files automatically.